Zest and juice of 1 lemon
1 hot chile pepper such as serrano, seeded and minced, or to taste
1/8 teaspoon fine sea salt (optional)
3 cups diced seedless watermelon
3 cups diced cantaloupe
1 lb. green-striped yellow or other heirloom tomatoes, chopped
In a large bowl, whisk together lemon zest and juice, chile and salt.
Add watermelon, cantaloupe and tomatoes, and toss.
Let sit at least 10 minutes to allow flavors to blend; serve at room temperature or chilled.